Balbir Singh | 8cdea7c | 2008-02-07 00:13:50 -0800 | [diff] [blame] | 1 | /* memcontrol.h - Memory Controller |
| 2 | * |
| 3 | * Copyright IBM Corporation, 2007 |
| 4 | * Author Balbir Singh <balbir@linux.vnet.ibm.com> |
| 5 | * |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 6 | * Copyright 2007 OpenVZ SWsoft Inc |
| 7 | * Author: Pavel Emelianov <xemul@openvz.org> |
| 8 | * |
Balbir Singh | 8cdea7c | 2008-02-07 00:13:50 -0800 | [diff] [blame] | 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | */ |
| 19 | |
| 20 | #ifndef _LINUX_MEMCONTROL_H |
| 21 | #define _LINUX_MEMCONTROL_H |
Hirokazu Takahashi | f8d66542 | 2009-01-07 18:08:02 -0800 | [diff] [blame] | 22 | #include <linux/cgroup.h> |
Ying Han | 456f998 | 2011-05-26 16:25:38 -0700 | [diff] [blame] | 23 | #include <linux/vm_event_item.h> |
Glauber Costa | 7ae1e1d | 2012-12-18 14:21:56 -0800 | [diff] [blame] | 24 | #include <linux/hardirq.h> |
Glauber Costa | a8964b9 | 2012-12-18 14:22:09 -0800 | [diff] [blame] | 25 | #include <linux/jump_label.h> |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 26 | #include <linux/page_counter.h> |
| 27 | #include <linux/vmpressure.h> |
| 28 | #include <linux/eventfd.h> |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 29 | #include <linux/mm.h> |
| 30 | #include <linux/vmstat.h> |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 31 | #include <linux/writeback.h> |
Johannes Weiner | fdf1cdb | 2016-03-15 14:57:25 -0700 | [diff] [blame] | 32 | #include <linux/page-flags.h> |
Ying Han | 456f998 | 2011-05-26 16:25:38 -0700 | [diff] [blame] | 33 | |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 34 | struct mem_cgroup; |
Balbir Singh | 8697d33 | 2008-02-07 00:13:59 -0800 | [diff] [blame] | 35 | struct page; |
| 36 | struct mm_struct; |
Glauber Costa | 2633d7a | 2012-12-18 14:22:34 -0800 | [diff] [blame] | 37 | struct kmem_cache; |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 38 | |
Johannes Weiner | 71cd311 | 2017-05-03 14:55:13 -0700 | [diff] [blame] | 39 | /* Cgroup-specific page state, on top of universal node page state */ |
| 40 | enum memcg_stat_item { |
| 41 | MEMCG_CACHE = NR_VM_NODE_STAT_ITEMS, |
| 42 | MEMCG_RSS, |
| 43 | MEMCG_RSS_HUGE, |
| 44 | MEMCG_SWAP, |
| 45 | MEMCG_SOCK, |
| 46 | /* XXX: why are these zone and not node counters? */ |
| 47 | MEMCG_KERNEL_STACK_KB, |
Johannes Weiner | b2807f0 | 2016-01-20 15:03:22 -0800 | [diff] [blame] | 48 | MEMCG_NR_STAT, |
Greg Thelen | 2a7106f | 2011-01-13 15:47:37 -0800 | [diff] [blame] | 49 | }; |
| 50 | |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 51 | enum memcg_memory_event { |
| 52 | MEMCG_LOW, |
Johannes Weiner | 71cd311 | 2017-05-03 14:55:13 -0700 | [diff] [blame] | 53 | MEMCG_HIGH, |
| 54 | MEMCG_MAX, |
| 55 | MEMCG_OOM, |
Roman Gushchin | fe6bdfc | 2018-06-14 15:28:05 -0700 | [diff] [blame] | 56 | MEMCG_OOM_KILL, |
Tejun Heo | f3a53a3 | 2018-06-07 17:05:35 -0700 | [diff] [blame] | 57 | MEMCG_SWAP_MAX, |
| 58 | MEMCG_SWAP_FAIL, |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 59 | MEMCG_NR_MEMORY_EVENTS, |
Johannes Weiner | 71cd311 | 2017-05-03 14:55:13 -0700 | [diff] [blame] | 60 | }; |
| 61 | |
Roman Gushchin | bf8d5d5 | 2018-06-07 17:07:46 -0700 | [diff] [blame] | 62 | enum mem_cgroup_protection { |
| 63 | MEMCG_PROT_NONE, |
| 64 | MEMCG_PROT_LOW, |
| 65 | MEMCG_PROT_MIN, |
| 66 | }; |
| 67 | |
Johannes Weiner | 5660048 | 2012-01-12 17:17:59 -0800 | [diff] [blame] | 68 | struct mem_cgroup_reclaim_cookie { |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 69 | pg_data_t *pgdat; |
Johannes Weiner | 5660048 | 2012-01-12 17:17:59 -0800 | [diff] [blame] | 70 | int priority; |
| 71 | unsigned int generation; |
| 72 | }; |
| 73 | |
Johannes Weiner | 71cd311 | 2017-05-03 14:55:13 -0700 | [diff] [blame] | 74 | #ifdef CONFIG_MEMCG |
| 75 | |
| 76 | #define MEM_CGROUP_ID_SHIFT 16 |
| 77 | #define MEM_CGROUP_ID_MAX USHRT_MAX |
| 78 | |
| 79 | struct mem_cgroup_id { |
| 80 | int id; |
Kirill Tkhai | 1c2d479 | 2018-10-26 15:09:28 -0700 | [diff] [blame] | 81 | refcount_t ref; |
Johannes Weiner | 71cd311 | 2017-05-03 14:55:13 -0700 | [diff] [blame] | 82 | }; |
| 83 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 84 | /* |
| 85 | * Per memcg event counter is incremented at every pagein/pageout. With THP, |
| 86 | * it will be incremated by the number of pages. This counter is used for |
| 87 | * for trigger some periodic events. This is straightforward and better |
| 88 | * than using jiffies etc. to handle periodic memcg event. |
| 89 | */ |
| 90 | enum mem_cgroup_events_target { |
| 91 | MEM_CGROUP_TARGET_THRESH, |
| 92 | MEM_CGROUP_TARGET_SOFTLIMIT, |
| 93 | MEM_CGROUP_TARGET_NUMAINFO, |
| 94 | MEM_CGROUP_NTARGETS, |
| 95 | }; |
| 96 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 97 | struct mem_cgroup_stat_cpu { |
Johannes Weiner | b2807f0 | 2016-01-20 15:03:22 -0800 | [diff] [blame] | 98 | long count[MEMCG_NR_STAT]; |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 99 | unsigned long events[NR_VM_EVENT_ITEMS]; |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 100 | unsigned long nr_page_events; |
| 101 | unsigned long targets[MEM_CGROUP_NTARGETS]; |
| 102 | }; |
| 103 | |
| 104 | struct mem_cgroup_reclaim_iter { |
| 105 | struct mem_cgroup *position; |
| 106 | /* scan generation, increased every round-trip */ |
| 107 | unsigned int generation; |
| 108 | }; |
| 109 | |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 110 | struct lruvec_stat { |
| 111 | long count[NR_VM_NODE_STAT_ITEMS]; |
| 112 | }; |
| 113 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 114 | /* |
Kirill Tkhai | 0a4465d | 2018-08-17 15:47:37 -0700 | [diff] [blame] | 115 | * Bitmap of shrinker::id corresponding to memcg-aware shrinkers, |
| 116 | * which have elements charged to this memcg. |
| 117 | */ |
| 118 | struct memcg_shrinker_map { |
| 119 | struct rcu_head rcu; |
| 120 | unsigned long map[0]; |
| 121 | }; |
| 122 | |
| 123 | /* |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 124 | * per-zone information in memory controller. |
| 125 | */ |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 126 | struct mem_cgroup_per_node { |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 127 | struct lruvec lruvec; |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 128 | |
| 129 | struct lruvec_stat __percpu *lruvec_stat_cpu; |
| 130 | atomic_long_t lruvec_stat[NR_VM_NODE_STAT_ITEMS]; |
| 131 | |
Michal Hocko | b4536f0c8 | 2017-01-10 16:58:04 -0800 | [diff] [blame] | 132 | unsigned long lru_zone_size[MAX_NR_ZONES][NR_LRU_LISTS]; |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 133 | |
| 134 | struct mem_cgroup_reclaim_iter iter[DEF_PRIORITY + 1]; |
| 135 | |
Kirill Tkhai | 0a4465d | 2018-08-17 15:47:37 -0700 | [diff] [blame] | 136 | #ifdef CONFIG_MEMCG_KMEM |
| 137 | struct memcg_shrinker_map __rcu *shrinker_map; |
| 138 | #endif |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 139 | struct rb_node tree_node; /* RB tree node */ |
| 140 | unsigned long usage_in_excess;/* Set to the value by which */ |
| 141 | /* the soft limit is exceeded*/ |
| 142 | bool on_tree; |
Andrey Ryabinin | e3c1ac5 | 2018-04-10 16:28:03 -0700 | [diff] [blame] | 143 | bool congested; /* memcg has many dirty pages */ |
| 144 | /* backed by a congested BDI */ |
| 145 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 146 | struct mem_cgroup *memcg; /* Back pointer, we cannot */ |
| 147 | /* use container_of */ |
| 148 | }; |
| 149 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 150 | struct mem_cgroup_threshold { |
| 151 | struct eventfd_ctx *eventfd; |
| 152 | unsigned long threshold; |
| 153 | }; |
| 154 | |
| 155 | /* For threshold */ |
| 156 | struct mem_cgroup_threshold_ary { |
| 157 | /* An array index points to threshold just below or equal to usage. */ |
| 158 | int current_threshold; |
| 159 | /* Size of entries[] */ |
| 160 | unsigned int size; |
| 161 | /* Array of thresholds */ |
| 162 | struct mem_cgroup_threshold entries[0]; |
| 163 | }; |
| 164 | |
| 165 | struct mem_cgroup_thresholds { |
| 166 | /* Primary thresholds array */ |
| 167 | struct mem_cgroup_threshold_ary *primary; |
| 168 | /* |
| 169 | * Spare threshold array. |
| 170 | * This is needed to make mem_cgroup_unregister_event() "never fail". |
| 171 | * It must be able to store at least primary->size - 1 entries. |
| 172 | */ |
| 173 | struct mem_cgroup_threshold_ary *spare; |
| 174 | }; |
| 175 | |
Johannes Weiner | 567e9ab | 2016-01-20 15:02:24 -0800 | [diff] [blame] | 176 | enum memcg_kmem_state { |
| 177 | KMEM_NONE, |
| 178 | KMEM_ALLOCATED, |
| 179 | KMEM_ONLINE, |
| 180 | }; |
| 181 | |
Aaron Lu | e81bf97 | 2018-06-07 17:09:44 -0700 | [diff] [blame] | 182 | #if defined(CONFIG_SMP) |
| 183 | struct memcg_padding { |
| 184 | char x[0]; |
| 185 | } ____cacheline_internodealigned_in_smp; |
| 186 | #define MEMCG_PADDING(name) struct memcg_padding name; |
| 187 | #else |
| 188 | #define MEMCG_PADDING(name) |
| 189 | #endif |
| 190 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 191 | /* |
| 192 | * The memory controller data structure. The memory controller controls both |
| 193 | * page cache and RSS per cgroup. We would eventually like to provide |
| 194 | * statistics based on the statistics developed by Rik Van Riel for clock-pro, |
| 195 | * to help the administrator determine what knobs to tune. |
| 196 | */ |
| 197 | struct mem_cgroup { |
| 198 | struct cgroup_subsys_state css; |
| 199 | |
Johannes Weiner | 73f576c | 2016-07-20 15:44:57 -0700 | [diff] [blame] | 200 | /* Private memcg ID. Used to ID objects that outlive the cgroup */ |
| 201 | struct mem_cgroup_id id; |
| 202 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 203 | /* Accounted resources */ |
| 204 | struct page_counter memory; |
Vladimir Davydov | 37e8435 | 2016-01-20 15:02:56 -0800 | [diff] [blame] | 205 | struct page_counter swap; |
Johannes Weiner | 0db1529 | 2016-01-20 15:02:50 -0800 | [diff] [blame] | 206 | |
| 207 | /* Legacy consumer-oriented counters */ |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 208 | struct page_counter memsw; |
| 209 | struct page_counter kmem; |
Johannes Weiner | 0db1529 | 2016-01-20 15:02:50 -0800 | [diff] [blame] | 210 | struct page_counter tcpmem; |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 211 | |
Roman Gushchin | 2306715 | 2018-06-07 17:06:22 -0700 | [diff] [blame] | 212 | /* Upper bound of normal memory consumption range */ |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 213 | unsigned long high; |
| 214 | |
Johannes Weiner | f7e1cb6 | 2016-01-14 15:21:29 -0800 | [diff] [blame] | 215 | /* Range enforcement for interrupt charges */ |
| 216 | struct work_struct high_work; |
| 217 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 218 | unsigned long soft_limit; |
| 219 | |
| 220 | /* vmpressure notifications */ |
| 221 | struct vmpressure vmpressure; |
| 222 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 223 | /* |
| 224 | * Should the accounting and control be hierarchical, per subtree? |
| 225 | */ |
| 226 | bool use_hierarchy; |
| 227 | |
Roman Gushchin | 3d8b38e | 2018-08-21 21:53:54 -0700 | [diff] [blame] | 228 | /* |
| 229 | * Should the OOM killer kill all belonging tasks, had it kill one? |
| 230 | */ |
| 231 | bool oom_group; |
| 232 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 233 | /* protected by memcg_oom_lock */ |
| 234 | bool oom_lock; |
| 235 | int under_oom; |
| 236 | |
| 237 | int swappiness; |
| 238 | /* OOM-Killer disable */ |
| 239 | int oom_kill_disable; |
| 240 | |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 241 | /* memory.events */ |
Tejun Heo | 472912a | 2015-09-18 18:01:59 -0400 | [diff] [blame] | 242 | struct cgroup_file events_file; |
| 243 | |
Tejun Heo | f3a53a3 | 2018-06-07 17:05:35 -0700 | [diff] [blame] | 244 | /* handle for "memory.swap.events" */ |
| 245 | struct cgroup_file swap_events_file; |
| 246 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 247 | /* protect arrays of thresholds */ |
| 248 | struct mutex thresholds_lock; |
| 249 | |
| 250 | /* thresholds for memory usage. RCU-protected */ |
| 251 | struct mem_cgroup_thresholds thresholds; |
| 252 | |
| 253 | /* thresholds for mem+swap usage. RCU-protected */ |
| 254 | struct mem_cgroup_thresholds memsw_thresholds; |
| 255 | |
| 256 | /* For oom notifier event fd */ |
| 257 | struct list_head oom_notify; |
| 258 | |
| 259 | /* |
| 260 | * Should we move charges of a task when a task is moved into this |
| 261 | * mem_cgroup ? And what type of charges should we move ? |
| 262 | */ |
| 263 | unsigned long move_charge_at_immigrate; |
Aaron Lu | e81bf97 | 2018-06-07 17:09:44 -0700 | [diff] [blame] | 264 | /* taken only while moving_account > 0 */ |
| 265 | spinlock_t move_lock; |
| 266 | unsigned long move_lock_flags; |
| 267 | |
| 268 | MEMCG_PADDING(_pad1_); |
| 269 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 270 | /* |
| 271 | * set > 0 if pages under this cgroup are moving to other cgroup. |
| 272 | */ |
| 273 | atomic_t moving_account; |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 274 | struct task_struct *move_lock_task; |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 275 | |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 276 | /* memory.stat */ |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 277 | struct mem_cgroup_stat_cpu __percpu *stat_cpu; |
Aaron Lu | e81bf97 | 2018-06-07 17:09:44 -0700 | [diff] [blame] | 278 | |
| 279 | MEMCG_PADDING(_pad2_); |
| 280 | |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 281 | atomic_long_t stat[MEMCG_NR_STAT]; |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 282 | atomic_long_t events[NR_VM_EVENT_ITEMS]; |
Aaron Lu | e81bf97 | 2018-06-07 17:09:44 -0700 | [diff] [blame] | 283 | atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS]; |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 284 | |
Johannes Weiner | d886f4e | 2016-01-20 15:02:47 -0800 | [diff] [blame] | 285 | unsigned long socket_pressure; |
| 286 | |
| 287 | /* Legacy tcp memory accounting */ |
Johannes Weiner | 0db1529 | 2016-01-20 15:02:50 -0800 | [diff] [blame] | 288 | bool tcpmem_active; |
| 289 | int tcpmem_pressure; |
Johannes Weiner | d886f4e | 2016-01-20 15:02:47 -0800 | [diff] [blame] | 290 | |
Kirill Tkhai | 84c07d1 | 2018-08-17 15:47:25 -0700 | [diff] [blame] | 291 | #ifdef CONFIG_MEMCG_KMEM |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 292 | /* Index in the kmem_cache->memcg_params.memcg_caches array */ |
| 293 | int kmemcg_id; |
Johannes Weiner | 567e9ab | 2016-01-20 15:02:24 -0800 | [diff] [blame] | 294 | enum memcg_kmem_state kmem_state; |
Tejun Heo | bc2791f | 2017-02-22 15:41:21 -0800 | [diff] [blame] | 295 | struct list_head kmem_caches; |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 296 | #endif |
| 297 | |
| 298 | int last_scanned_node; |
| 299 | #if MAX_NUMNODES > 1 |
| 300 | nodemask_t scan_nodes; |
| 301 | atomic_t numainfo_events; |
| 302 | atomic_t numainfo_updating; |
| 303 | #endif |
| 304 | |
| 305 | #ifdef CONFIG_CGROUP_WRITEBACK |
| 306 | struct list_head cgwb_list; |
| 307 | struct wb_domain cgwb_domain; |
| 308 | #endif |
| 309 | |
| 310 | /* List of events which userspace want to receive */ |
| 311 | struct list_head event_list; |
| 312 | spinlock_t event_list_lock; |
| 313 | |
| 314 | struct mem_cgroup_per_node *nodeinfo[0]; |
| 315 | /* WARNING: nodeinfo must be the last member here */ |
| 316 | }; |
Johannes Weiner | 7d82860 | 2016-01-14 15:20:56 -0800 | [diff] [blame] | 317 | |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 318 | /* |
| 319 | * size of first charge trial. "32" comes from vmscan.c's magic value. |
| 320 | * TODO: maybe necessary to use big numbers in big irons. |
| 321 | */ |
| 322 | #define MEMCG_CHARGE_BATCH 32U |
| 323 | |
Johannes Weiner | 7d82860 | 2016-01-14 15:20:56 -0800 | [diff] [blame] | 324 | extern struct mem_cgroup *root_mem_cgroup; |
Tejun Heo | 5616163 | 2015-05-22 17:13:20 -0400 | [diff] [blame] | 325 | |
Kirill Tkhai | dfd2f10 | 2018-08-17 15:48:06 -0700 | [diff] [blame] | 326 | static inline bool mem_cgroup_is_root(struct mem_cgroup *memcg) |
| 327 | { |
| 328 | return (memcg == root_mem_cgroup); |
| 329 | } |
| 330 | |
Johannes Weiner | 23047a9 | 2016-03-15 14:57:16 -0700 | [diff] [blame] | 331 | static inline bool mem_cgroup_disabled(void) |
| 332 | { |
| 333 | return !cgroup_subsys_enabled(memory_cgrp_subsys); |
| 334 | } |
| 335 | |
Roman Gushchin | bf8d5d5 | 2018-06-07 17:07:46 -0700 | [diff] [blame] | 336 | enum mem_cgroup_protection mem_cgroup_protected(struct mem_cgroup *root, |
| 337 | struct mem_cgroup *memcg); |
Johannes Weiner | 241994ed | 2015-02-11 15:26:06 -0800 | [diff] [blame] | 338 | |
Johannes Weiner | 00501b5 | 2014-08-08 14:19:20 -0700 | [diff] [blame] | 339 | int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, |
Kirill A. Shutemov | f627c2f | 2016-01-15 16:52:20 -0800 | [diff] [blame] | 340 | gfp_t gfp_mask, struct mem_cgroup **memcgp, |
| 341 | bool compound); |
Tejun Heo | 2cf8558 | 2018-07-03 11:14:56 -0400 | [diff] [blame] | 342 | int mem_cgroup_try_charge_delay(struct page *page, struct mm_struct *mm, |
| 343 | gfp_t gfp_mask, struct mem_cgroup **memcgp, |
| 344 | bool compound); |
Johannes Weiner | 00501b5 | 2014-08-08 14:19:20 -0700 | [diff] [blame] | 345 | void mem_cgroup_commit_charge(struct page *page, struct mem_cgroup *memcg, |
Kirill A. Shutemov | f627c2f | 2016-01-15 16:52:20 -0800 | [diff] [blame] | 346 | bool lrucare, bool compound); |
| 347 | void mem_cgroup_cancel_charge(struct page *page, struct mem_cgroup *memcg, |
| 348 | bool compound); |
Johannes Weiner | 0a31bc9 | 2014-08-08 14:19:22 -0700 | [diff] [blame] | 349 | void mem_cgroup_uncharge(struct page *page); |
Johannes Weiner | 747db95 | 2014-08-08 14:19:24 -0700 | [diff] [blame] | 350 | void mem_cgroup_uncharge_list(struct list_head *page_list); |
Johannes Weiner | 0a31bc9 | 2014-08-08 14:19:22 -0700 | [diff] [blame] | 351 | |
Johannes Weiner | 6a93ca8 | 2016-03-15 14:57:19 -0700 | [diff] [blame] | 352 | void mem_cgroup_migrate(struct page *oldpage, struct page *newpage); |
Johannes Weiner | 0a31bc9 | 2014-08-08 14:19:22 -0700 | [diff] [blame] | 353 | |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 354 | static struct mem_cgroup_per_node * |
| 355 | mem_cgroup_nodeinfo(struct mem_cgroup *memcg, int nid) |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 356 | { |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 357 | return memcg->nodeinfo[nid]; |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | /** |
Mel Gorman | a9dd0a8 | 2016-07-28 15:46:02 -0700 | [diff] [blame] | 361 | * mem_cgroup_lruvec - get the lru list vector for a node or a memcg zone |
| 362 | * @node: node of the wanted lruvec |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 363 | * @memcg: memcg of the wanted lruvec |
| 364 | * |
Mel Gorman | a9dd0a8 | 2016-07-28 15:46:02 -0700 | [diff] [blame] | 365 | * Returns the lru list vector holding pages for a given @node or a given |
| 366 | * @memcg and @zone. This can be the node lruvec, if the memory controller |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 367 | * is disabled. |
| 368 | */ |
Mel Gorman | a9dd0a8 | 2016-07-28 15:46:02 -0700 | [diff] [blame] | 369 | static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 370 | struct mem_cgroup *memcg) |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 371 | { |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 372 | struct mem_cgroup_per_node *mz; |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 373 | struct lruvec *lruvec; |
| 374 | |
| 375 | if (mem_cgroup_disabled()) { |
Mel Gorman | a9dd0a8 | 2016-07-28 15:46:02 -0700 | [diff] [blame] | 376 | lruvec = node_lruvec(pgdat); |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 377 | goto out; |
| 378 | } |
| 379 | |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 380 | mz = mem_cgroup_nodeinfo(memcg, pgdat->node_id); |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 381 | lruvec = &mz->lruvec; |
| 382 | out: |
| 383 | /* |
| 384 | * Since a node can be onlined after the mem_cgroup was created, |
Mel Gorman | 599d0c9 | 2016-07-28 15:45:31 -0700 | [diff] [blame] | 385 | * we have to be prepared to initialize lruvec->pgdat here; |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 386 | * and if offlined then reonlined, we need to reinitialize it. |
| 387 | */ |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 388 | if (unlikely(lruvec->pgdat != pgdat)) |
| 389 | lruvec->pgdat = pgdat; |
Johannes Weiner | 55779ec | 2016-07-28 15:45:10 -0700 | [diff] [blame] | 390 | return lruvec; |
| 391 | } |
| 392 | |
Mel Gorman | 599d0c9 | 2016-07-28 15:45:31 -0700 | [diff] [blame] | 393 | struct lruvec *mem_cgroup_page_lruvec(struct page *, struct pglist_data *); |
KAMEZAWA Hiroyuki | 569b846 | 2009-12-15 16:47:03 -0800 | [diff] [blame] | 394 | |
Johannes Weiner | 2314b42 | 2014-12-10 15:44:33 -0800 | [diff] [blame] | 395 | bool task_in_mem_cgroup(struct task_struct *task, struct mem_cgroup *memcg); |
Michal Hocko | 6421999 | 2015-09-08 15:01:07 -0700 | [diff] [blame] | 396 | struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
Vladimir Davydov | e993d90 | 2015-09-09 15:35:35 -0700 | [diff] [blame] | 397 | |
Shakeel Butt | d46eb14b | 2018-08-17 15:46:39 -0700 | [diff] [blame] | 398 | struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm); |
| 399 | |
Shakeel Butt | f745c6f | 2018-08-17 15:46:44 -0700 | [diff] [blame] | 400 | struct mem_cgroup *get_mem_cgroup_from_page(struct page *page); |
| 401 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 402 | static inline |
| 403 | struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *css){ |
| 404 | return css ? container_of(css, struct mem_cgroup, css) : NULL; |
| 405 | } |
| 406 | |
Roman Gushchin | dc0b586 | 2018-08-17 15:46:36 -0700 | [diff] [blame] | 407 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
| 408 | { |
Shakeel Butt | d46eb14b | 2018-08-17 15:46:39 -0700 | [diff] [blame] | 409 | if (memcg) |
| 410 | css_put(&memcg->css); |
Roman Gushchin | dc0b586 | 2018-08-17 15:46:36 -0700 | [diff] [blame] | 411 | } |
| 412 | |
Johannes Weiner | 8e8ae64 | 2016-01-14 15:21:32 -0800 | [diff] [blame] | 413 | #define mem_cgroup_from_counter(counter, member) \ |
| 414 | container_of(counter, struct mem_cgroup, member) |
| 415 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 416 | struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *, |
| 417 | struct mem_cgroup *, |
| 418 | struct mem_cgroup_reclaim_cookie *); |
| 419 | void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *); |
Vladimir Davydov | 7c5f64f | 2016-10-07 16:57:23 -0700 | [diff] [blame] | 420 | int mem_cgroup_scan_tasks(struct mem_cgroup *, |
| 421 | int (*)(struct task_struct *, void *), void *); |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 422 | |
Johannes Weiner | 23047a9 | 2016-03-15 14:57:16 -0700 | [diff] [blame] | 423 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
| 424 | { |
| 425 | if (mem_cgroup_disabled()) |
| 426 | return 0; |
| 427 | |
Johannes Weiner | 73f576c | 2016-07-20 15:44:57 -0700 | [diff] [blame] | 428 | return memcg->id.id; |
Johannes Weiner | 23047a9 | 2016-03-15 14:57:16 -0700 | [diff] [blame] | 429 | } |
Johannes Weiner | 73f576c | 2016-07-20 15:44:57 -0700 | [diff] [blame] | 430 | struct mem_cgroup *mem_cgroup_from_id(unsigned short id); |
Johannes Weiner | 23047a9 | 2016-03-15 14:57:16 -0700 | [diff] [blame] | 431 | |
Chris Down | aa9694b | 2019-03-05 15:45:52 -0800 | [diff] [blame] | 432 | static inline struct mem_cgroup *mem_cgroup_from_seq(struct seq_file *m) |
| 433 | { |
| 434 | return mem_cgroup_from_css(seq_css(m)); |
| 435 | } |
| 436 | |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 437 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
| 438 | { |
| 439 | struct mem_cgroup_per_node *mz; |
| 440 | |
| 441 | if (mem_cgroup_disabled()) |
| 442 | return NULL; |
| 443 | |
| 444 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); |
| 445 | return mz->memcg; |
| 446 | } |
| 447 | |
Johannes Weiner | 8e8ae64 | 2016-01-14 15:21:32 -0800 | [diff] [blame] | 448 | /** |
| 449 | * parent_mem_cgroup - find the accounting parent of a memcg |
| 450 | * @memcg: memcg whose parent to find |
| 451 | * |
| 452 | * Returns the parent memcg, or NULL if this is the root or the memory |
| 453 | * controller is in legacy no-hierarchy mode. |
| 454 | */ |
| 455 | static inline struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg) |
| 456 | { |
| 457 | if (!memcg->memory.parent) |
| 458 | return NULL; |
| 459 | return mem_cgroup_from_counter(memcg->memory.parent, memory); |
| 460 | } |
| 461 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 462 | static inline bool mem_cgroup_is_descendant(struct mem_cgroup *memcg, |
| 463 | struct mem_cgroup *root) |
| 464 | { |
| 465 | if (root == memcg) |
| 466 | return true; |
| 467 | if (!root->use_hierarchy) |
| 468 | return false; |
| 469 | return cgroup_is_descendant(memcg->css.cgroup, root->css.cgroup); |
| 470 | } |
Glauber Costa | e1aab16 | 2011-12-11 21:47:03 +0000 | [diff] [blame] | 471 | |
Johannes Weiner | 2314b42 | 2014-12-10 15:44:33 -0800 | [diff] [blame] | 472 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
| 473 | struct mem_cgroup *memcg) |
Lai Jiangshan | 2e4d409 | 2009-01-07 18:08:07 -0800 | [diff] [blame] | 474 | { |
Johannes Weiner | 587af30 | 2012-10-08 16:34:12 -0700 | [diff] [blame] | 475 | struct mem_cgroup *task_memcg; |
Johannes Weiner | 413918b | 2014-12-10 15:44:30 -0800 | [diff] [blame] | 476 | bool match = false; |
Johannes Weiner | c3ac9a8 | 2012-05-29 15:06:25 -0700 | [diff] [blame] | 477 | |
Lai Jiangshan | 2e4d409 | 2009-01-07 18:08:07 -0800 | [diff] [blame] | 478 | rcu_read_lock(); |
Johannes Weiner | 587af30 | 2012-10-08 16:34:12 -0700 | [diff] [blame] | 479 | task_memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); |
Johannes Weiner | 413918b | 2014-12-10 15:44:30 -0800 | [diff] [blame] | 480 | if (task_memcg) |
Johannes Weiner | 2314b42 | 2014-12-10 15:44:33 -0800 | [diff] [blame] | 481 | match = mem_cgroup_is_descendant(task_memcg, memcg); |
Lai Jiangshan | 2e4d409 | 2009-01-07 18:08:07 -0800 | [diff] [blame] | 482 | rcu_read_unlock(); |
Johannes Weiner | c3ac9a8 | 2012-05-29 15:06:25 -0700 | [diff] [blame] | 483 | return match; |
Lai Jiangshan | 2e4d409 | 2009-01-07 18:08:07 -0800 | [diff] [blame] | 484 | } |
Balbir Singh | 8a9f3cc | 2008-02-07 00:13:53 -0800 | [diff] [blame] | 485 | |
Michal Hocko | 6421999 | 2015-09-08 15:01:07 -0700 | [diff] [blame] | 486 | struct cgroup_subsys_state *mem_cgroup_css_from_page(struct page *page); |
Vladimir Davydov | 2fc0452 | 2015-09-09 15:35:28 -0700 | [diff] [blame] | 487 | ino_t page_cgroup_ino(struct page *page); |
Wu Fengguang | d324236 | 2009-12-16 12:19:59 +0100 | [diff] [blame] | 488 | |
Vladimir Davydov | eb01aaa | 2016-01-20 15:03:02 -0800 | [diff] [blame] | 489 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
| 490 | { |
| 491 | if (mem_cgroup_disabled()) |
| 492 | return true; |
| 493 | return !!(memcg->css.flags & CSS_ONLINE); |
| 494 | } |
| 495 | |
KAMEZAWA Hiroyuki | 58ae83d | 2008-02-07 00:14:32 -0800 | [diff] [blame] | 496 | /* |
| 497 | * For memory reclaim. |
| 498 | */ |
Ying Han | 889976d | 2011-05-26 16:25:33 -0700 | [diff] [blame] | 499 | int mem_cgroup_select_victim_node(struct mem_cgroup *memcg); |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 500 | |
| 501 | void mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru, |
Michal Hocko | b4536f0c8 | 2017-01-10 16:58:04 -0800 | [diff] [blame] | 502 | int zid, int nr_pages); |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 503 | |
Vladimir Davydov | 0a6b76d | 2016-03-17 14:18:42 -0700 | [diff] [blame] | 504 | unsigned long mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, |
| 505 | int nid, unsigned int lru_mask); |
| 506 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 507 | static inline |
| 508 | unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) |
| 509 | { |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 510 | struct mem_cgroup_per_node *mz; |
Michal Hocko | b4536f0c8 | 2017-01-10 16:58:04 -0800 | [diff] [blame] | 511 | unsigned long nr_pages = 0; |
| 512 | int zid; |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 513 | |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 514 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); |
Michal Hocko | b4536f0c8 | 2017-01-10 16:58:04 -0800 | [diff] [blame] | 515 | for (zid = 0; zid < MAX_NR_ZONES; zid++) |
| 516 | nr_pages += mz->lru_zone_size[zid][lru]; |
| 517 | return nr_pages; |
| 518 | } |
| 519 | |
| 520 | static inline |
| 521 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, |
| 522 | enum lru_list lru, int zone_idx) |
| 523 | { |
| 524 | struct mem_cgroup_per_node *mz; |
| 525 | |
| 526 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); |
| 527 | return mz->lru_zone_size[zone_idx][lru]; |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 528 | } |
| 529 | |
Tejun Heo | b23afb9 | 2015-11-05 18:46:11 -0800 | [diff] [blame] | 530 | void mem_cgroup_handle_over_high(void); |
| 531 | |
Roman Gushchin | bbec2e1 | 2018-06-07 17:06:18 -0700 | [diff] [blame] | 532 | unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg); |
Vladimir Davydov | 7c5f64f | 2016-10-07 16:57:23 -0700 | [diff] [blame] | 533 | |
yuzhoujian | f0c867d | 2018-12-28 00:36:10 -0800 | [diff] [blame] | 534 | void mem_cgroup_print_oom_context(struct mem_cgroup *memcg, |
Michal Hocko | 6421999 | 2015-09-08 15:01:07 -0700 | [diff] [blame] | 535 | struct task_struct *p); |
KAMEZAWA Hiroyuki | 58ae83d | 2008-02-07 00:14:32 -0800 | [diff] [blame] | 536 | |
yuzhoujian | f0c867d | 2018-12-28 00:36:10 -0800 | [diff] [blame] | 537 | void mem_cgroup_print_oom_meminfo(struct mem_cgroup *memcg); |
| 538 | |
Michal Hocko | 29ef680 | 2018-08-17 15:47:11 -0700 | [diff] [blame] | 539 | static inline void mem_cgroup_enter_user_fault(void) |
Johannes Weiner | 519e524 | 2013-09-12 15:13:42 -0700 | [diff] [blame] | 540 | { |
Michal Hocko | 29ef680 | 2018-08-17 15:47:11 -0700 | [diff] [blame] | 541 | WARN_ON(current->in_user_fault); |
| 542 | current->in_user_fault = 1; |
Johannes Weiner | 519e524 | 2013-09-12 15:13:42 -0700 | [diff] [blame] | 543 | } |
| 544 | |
Michal Hocko | 29ef680 | 2018-08-17 15:47:11 -0700 | [diff] [blame] | 545 | static inline void mem_cgroup_exit_user_fault(void) |
Johannes Weiner | 519e524 | 2013-09-12 15:13:42 -0700 | [diff] [blame] | 546 | { |
Michal Hocko | 29ef680 | 2018-08-17 15:47:11 -0700 | [diff] [blame] | 547 | WARN_ON(!current->in_user_fault); |
| 548 | current->in_user_fault = 0; |
Johannes Weiner | 519e524 | 2013-09-12 15:13:42 -0700 | [diff] [blame] | 549 | } |
| 550 | |
Johannes Weiner | 3812c8c | 2013-09-12 15:13:44 -0700 | [diff] [blame] | 551 | static inline bool task_in_memcg_oom(struct task_struct *p) |
| 552 | { |
Tejun Heo | 626ebc4 | 2015-11-05 18:46:09 -0800 | [diff] [blame] | 553 | return p->memcg_in_oom; |
Johannes Weiner | 3812c8c | 2013-09-12 15:13:44 -0700 | [diff] [blame] | 554 | } |
| 555 | |
Johannes Weiner | 4942642 | 2013-10-16 13:46:59 -0700 | [diff] [blame] | 556 | bool mem_cgroup_oom_synchronize(bool wait); |
Roman Gushchin | 3d8b38e | 2018-08-21 21:53:54 -0700 | [diff] [blame] | 557 | struct mem_cgroup *mem_cgroup_get_oom_group(struct task_struct *victim, |
| 558 | struct mem_cgroup *oom_domain); |
| 559 | void mem_cgroup_print_oom_group(struct mem_cgroup *memcg); |
Johannes Weiner | 3812c8c | 2013-09-12 15:13:44 -0700 | [diff] [blame] | 560 | |
Andrew Morton | c255a45 | 2012-07-31 16:43:02 -0700 | [diff] [blame] | 561 | #ifdef CONFIG_MEMCG_SWAP |
KAMEZAWA Hiroyuki | c077719 | 2009-01-07 18:07:57 -0800 | [diff] [blame] | 562 | extern int do_swap_account; |
| 563 | #endif |
Hirokazu Takahashi | f8d66542 | 2009-01-07 18:08:02 -0800 | [diff] [blame] | 564 | |
Johannes Weiner | 739f79f | 2017-08-18 15:15:48 -0700 | [diff] [blame] | 565 | struct mem_cgroup *lock_page_memcg(struct page *page); |
| 566 | void __unlock_page_memcg(struct mem_cgroup *memcg); |
Johannes Weiner | 62cccb8 | 2016-03-15 14:57:22 -0700 | [diff] [blame] | 567 | void unlock_page_memcg(struct page *page); |
KAMEZAWA Hiroyuki | 89c06bd | 2012-03-21 16:34:25 -0700 | [diff] [blame] | 568 | |
Greg Thelen | 0b3d6e6 | 2019-04-05 18:39:18 -0700 | [diff] [blame] | 569 | /* |
| 570 | * idx can be of type enum memcg_stat_item or node_stat_item. |
| 571 | * Keep in sync with memcg_exact_page_state(). |
| 572 | */ |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 573 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 574 | int idx) |
Johannes Weiner | 2a2e488 | 2017-05-03 14:55:03 -0700 | [diff] [blame] | 575 | { |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 576 | long x = atomic_long_read(&memcg->stat[idx]); |
| 577 | #ifdef CONFIG_SMP |
| 578 | if (x < 0) |
| 579 | x = 0; |
| 580 | #endif |
| 581 | return x; |
Johannes Weiner | 2a2e488 | 2017-05-03 14:55:03 -0700 | [diff] [blame] | 582 | } |
| 583 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 584 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 585 | static inline void __mod_memcg_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 586 | int idx, int val) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 587 | { |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 588 | long x; |
| 589 | |
| 590 | if (mem_cgroup_disabled()) |
| 591 | return; |
| 592 | |
| 593 | x = val + __this_cpu_read(memcg->stat_cpu->count[idx]); |
| 594 | if (unlikely(abs(x) > MEMCG_CHARGE_BATCH)) { |
| 595 | atomic_long_add(x, &memcg->stat[idx]); |
| 596 | x = 0; |
| 597 | } |
| 598 | __this_cpu_write(memcg->stat_cpu->count[idx], x); |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 599 | } |
| 600 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 601 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 602 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 603 | int idx, int val) |
Johannes Weiner | 2a2e488 | 2017-05-03 14:55:03 -0700 | [diff] [blame] | 604 | { |
Johannes Weiner | c3cc391 | 2018-02-21 14:45:24 -0800 | [diff] [blame] | 605 | unsigned long flags; |
| 606 | |
| 607 | local_irq_save(flags); |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 608 | __mod_memcg_state(memcg, idx, val); |
Johannes Weiner | c3cc391 | 2018-02-21 14:45:24 -0800 | [diff] [blame] | 609 | local_irq_restore(flags); |
Johannes Weiner | 2a2e488 | 2017-05-03 14:55:03 -0700 | [diff] [blame] | 610 | } |
| 611 | |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 612 | /** |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 613 | * mod_memcg_page_state - update page state statistics |
Johannes Weiner | 62cccb8 | 2016-03-15 14:57:22 -0700 | [diff] [blame] | 614 | * @page: the page |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 615 | * @idx: page state item to account |
| 616 | * @val: number of pages (positive or negative) |
| 617 | * |
Johannes Weiner | fdf1cdb | 2016-03-15 14:57:25 -0700 | [diff] [blame] | 618 | * The @page must be locked or the caller must use lock_page_memcg() |
| 619 | * to prevent double accounting when the page is concurrently being |
| 620 | * moved to another memcg: |
Johannes Weiner | 81f8c3a | 2016-03-15 14:57:04 -0700 | [diff] [blame] | 621 | * |
Johannes Weiner | fdf1cdb | 2016-03-15 14:57:25 -0700 | [diff] [blame] | 622 | * lock_page(page) or lock_page_memcg(page) |
Johannes Weiner | 81f8c3a | 2016-03-15 14:57:04 -0700 | [diff] [blame] | 623 | * if (TestClearPageState(page)) |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 624 | * mod_memcg_page_state(page, state, -1); |
Johannes Weiner | fdf1cdb | 2016-03-15 14:57:25 -0700 | [diff] [blame] | 625 | * unlock_page(page) or unlock_page_memcg(page) |
Johannes Weiner | 2a2e488 | 2017-05-03 14:55:03 -0700 | [diff] [blame] | 626 | * |
| 627 | * Kernel pages are an exception to this, since they'll never move. |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 628 | */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 629 | static inline void __mod_memcg_page_state(struct page *page, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 630 | int idx, int val) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 631 | { |
| 632 | if (page->mem_cgroup) |
| 633 | __mod_memcg_state(page->mem_cgroup, idx, val); |
| 634 | } |
| 635 | |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 636 | static inline void mod_memcg_page_state(struct page *page, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 637 | int idx, int val) |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 638 | { |
Johannes Weiner | 62cccb8 | 2016-03-15 14:57:22 -0700 | [diff] [blame] | 639 | if (page->mem_cgroup) |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 640 | mod_memcg_state(page->mem_cgroup, idx, val); |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 641 | } |
| 642 | |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 643 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
| 644 | enum node_stat_item idx) |
Greg Thelen | 2a7106f | 2011-01-13 15:47:37 -0800 | [diff] [blame] | 645 | { |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 646 | struct mem_cgroup_per_node *pn; |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 647 | long x; |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 648 | |
| 649 | if (mem_cgroup_disabled()) |
| 650 | return node_page_state(lruvec_pgdat(lruvec), idx); |
| 651 | |
| 652 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 653 | x = atomic_long_read(&pn->lruvec_stat[idx]); |
| 654 | #ifdef CONFIG_SMP |
| 655 | if (x < 0) |
| 656 | x = 0; |
| 657 | #endif |
| 658 | return x; |
Greg Thelen | 2a7106f | 2011-01-13 15:47:37 -0800 | [diff] [blame] | 659 | } |
| 660 | |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 661 | static inline void __mod_lruvec_state(struct lruvec *lruvec, |
| 662 | enum node_stat_item idx, int val) |
Greg Thelen | 2a7106f | 2011-01-13 15:47:37 -0800 | [diff] [blame] | 663 | { |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 664 | struct mem_cgroup_per_node *pn; |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 665 | long x; |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 666 | |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 667 | /* Update node */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 668 | __mod_node_page_state(lruvec_pgdat(lruvec), idx, val); |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 669 | |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 670 | if (mem_cgroup_disabled()) |
| 671 | return; |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 672 | |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 673 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 674 | |
| 675 | /* Update memcg */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 676 | __mod_memcg_state(pn->memcg, idx, val); |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 677 | |
| 678 | /* Update lruvec */ |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 679 | x = val + __this_cpu_read(pn->lruvec_stat_cpu->count[idx]); |
| 680 | if (unlikely(abs(x) > MEMCG_CHARGE_BATCH)) { |
| 681 | atomic_long_add(x, &pn->lruvec_stat[idx]); |
| 682 | x = 0; |
| 683 | } |
| 684 | __this_cpu_write(pn->lruvec_stat_cpu->count[idx], x); |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 685 | } |
| 686 | |
| 687 | static inline void mod_lruvec_state(struct lruvec *lruvec, |
| 688 | enum node_stat_item idx, int val) |
| 689 | { |
Johannes Weiner | c3cc391 | 2018-02-21 14:45:24 -0800 | [diff] [blame] | 690 | unsigned long flags; |
| 691 | |
| 692 | local_irq_save(flags); |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 693 | __mod_lruvec_state(lruvec, idx, val); |
Johannes Weiner | c3cc391 | 2018-02-21 14:45:24 -0800 | [diff] [blame] | 694 | local_irq_restore(flags); |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 695 | } |
| 696 | |
| 697 | static inline void __mod_lruvec_page_state(struct page *page, |
| 698 | enum node_stat_item idx, int val) |
| 699 | { |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 700 | pg_data_t *pgdat = page_pgdat(page); |
| 701 | struct lruvec *lruvec; |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 702 | |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 703 | /* Untracked pages have no memcg, no lruvec. Update only the node */ |
| 704 | if (!page->mem_cgroup) { |
| 705 | __mod_node_page_state(pgdat, idx, val); |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 706 | return; |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 707 | } |
| 708 | |
| 709 | lruvec = mem_cgroup_lruvec(pgdat, page->mem_cgroup); |
| 710 | __mod_lruvec_state(lruvec, idx, val); |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 711 | } |
| 712 | |
| 713 | static inline void mod_lruvec_page_state(struct page *page, |
| 714 | enum node_stat_item idx, int val) |
| 715 | { |
Johannes Weiner | c3cc391 | 2018-02-21 14:45:24 -0800 | [diff] [blame] | 716 | unsigned long flags; |
| 717 | |
| 718 | local_irq_save(flags); |
Johannes Weiner | 2845426 | 2018-01-31 16:16:41 -0800 | [diff] [blame] | 719 | __mod_lruvec_page_state(page, idx, val); |
Johannes Weiner | c3cc391 | 2018-02-21 14:45:24 -0800 | [diff] [blame] | 720 | local_irq_restore(flags); |
Greg Thelen | 2a7106f | 2011-01-13 15:47:37 -0800 | [diff] [blame] | 721 | } |
| 722 | |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 723 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
Andrew Morton | 0608f43 | 2013-09-24 15:27:41 -0700 | [diff] [blame] | 724 | gfp_t gfp_mask, |
| 725 | unsigned long *total_scanned); |
David Rientjes | a63d83f | 2010-08-09 17:19:46 -0700 | [diff] [blame] | 726 | |
Johannes Weiner | c9019e9 | 2018-01-31 16:16:37 -0800 | [diff] [blame] | 727 | static inline void __count_memcg_events(struct mem_cgroup *memcg, |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 728 | enum vm_event_item idx, |
| 729 | unsigned long count) |
Johannes Weiner | c9019e9 | 2018-01-31 16:16:37 -0800 | [diff] [blame] | 730 | { |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 731 | unsigned long x; |
| 732 | |
| 733 | if (mem_cgroup_disabled()) |
| 734 | return; |
| 735 | |
| 736 | x = count + __this_cpu_read(memcg->stat_cpu->events[idx]); |
| 737 | if (unlikely(x > MEMCG_CHARGE_BATCH)) { |
| 738 | atomic_long_add(x, &memcg->events[idx]); |
| 739 | x = 0; |
| 740 | } |
| 741 | __this_cpu_write(memcg->stat_cpu->events[idx], x); |
Johannes Weiner | c9019e9 | 2018-01-31 16:16:37 -0800 | [diff] [blame] | 742 | } |
| 743 | |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 744 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 745 | enum vm_event_item idx, |
| 746 | unsigned long count) |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 747 | { |
Johannes Weiner | c3cc391 | 2018-02-21 14:45:24 -0800 | [diff] [blame] | 748 | unsigned long flags; |
| 749 | |
| 750 | local_irq_save(flags); |
Johannes Weiner | a983b5e | 2018-01-31 16:16:45 -0800 | [diff] [blame] | 751 | __count_memcg_events(memcg, idx, count); |
Johannes Weiner | c3cc391 | 2018-02-21 14:45:24 -0800 | [diff] [blame] | 752 | local_irq_restore(flags); |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 753 | } |
| 754 | |
| 755 | static inline void count_memcg_page_event(struct page *page, |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 756 | enum vm_event_item idx) |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 757 | { |
| 758 | if (page->mem_cgroup) |
| 759 | count_memcg_events(page->mem_cgroup, idx, 1); |
| 760 | } |
| 761 | |
| 762 | static inline void count_memcg_event_mm(struct mm_struct *mm, |
| 763 | enum vm_event_item idx) |
David Rientjes | 68ae564 | 2012-12-12 13:51:57 -0800 | [diff] [blame] | 764 | { |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 765 | struct mem_cgroup *memcg; |
| 766 | |
David Rientjes | 68ae564 | 2012-12-12 13:51:57 -0800 | [diff] [blame] | 767 | if (mem_cgroup_disabled()) |
| 768 | return; |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 769 | |
| 770 | rcu_read_lock(); |
| 771 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); |
Roman Gushchin | fe6bdfc | 2018-06-14 15:28:05 -0700 | [diff] [blame] | 772 | if (likely(memcg)) |
Johannes Weiner | c9019e9 | 2018-01-31 16:16:37 -0800 | [diff] [blame] | 773 | count_memcg_events(memcg, idx, 1); |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 774 | rcu_read_unlock(); |
David Rientjes | 68ae564 | 2012-12-12 13:51:57 -0800 | [diff] [blame] | 775 | } |
Johannes Weiner | c9019e9 | 2018-01-31 16:16:37 -0800 | [diff] [blame] | 776 | |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 777 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
| 778 | enum memcg_memory_event event) |
Johannes Weiner | c9019e9 | 2018-01-31 16:16:37 -0800 | [diff] [blame] | 779 | { |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 780 | atomic_long_inc(&memcg->memory_events[event]); |
Johannes Weiner | c9019e9 | 2018-01-31 16:16:37 -0800 | [diff] [blame] | 781 | cgroup_file_notify(&memcg->events_file); |
| 782 | } |
| 783 | |
Roman Gushchin | fe6bdfc | 2018-06-14 15:28:05 -0700 | [diff] [blame] | 784 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
| 785 | enum memcg_memory_event event) |
| 786 | { |
| 787 | struct mem_cgroup *memcg; |
| 788 | |
| 789 | if (mem_cgroup_disabled()) |
| 790 | return; |
| 791 | |
| 792 | rcu_read_lock(); |
| 793 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); |
| 794 | if (likely(memcg)) |
| 795 | memcg_memory_event(memcg, event); |
| 796 | rcu_read_unlock(); |
| 797 | } |
| 798 | |
KAMEZAWA Hiroyuki | ca3e021 | 2011-01-20 14:44:24 -0800 | [diff] [blame] | 799 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
KAMEZAWA Hiroyuki | e94c8a9 | 2012-01-12 17:18:20 -0800 | [diff] [blame] | 800 | void mem_cgroup_split_huge_fixup(struct page *head); |
KAMEZAWA Hiroyuki | ca3e021 | 2011-01-20 14:44:24 -0800 | [diff] [blame] | 801 | #endif |
| 802 | |
Andrew Morton | c255a45 | 2012-07-31 16:43:02 -0700 | [diff] [blame] | 803 | #else /* CONFIG_MEMCG */ |
Johannes Weiner | 23047a9 | 2016-03-15 14:57:16 -0700 | [diff] [blame] | 804 | |
| 805 | #define MEM_CGROUP_ID_SHIFT 0 |
| 806 | #define MEM_CGROUP_ID_MAX 0 |
| 807 | |
KAMEZAWA Hiroyuki | 7a81b88 | 2009-01-07 18:07:48 -0800 | [diff] [blame] | 808 | struct mem_cgroup; |
| 809 | |
Kirill Tkhai | dfd2f10 | 2018-08-17 15:48:06 -0700 | [diff] [blame] | 810 | static inline bool mem_cgroup_is_root(struct mem_cgroup *memcg) |
| 811 | { |
| 812 | return true; |
| 813 | } |
| 814 | |
Johannes Weiner | 23047a9 | 2016-03-15 14:57:16 -0700 | [diff] [blame] | 815 | static inline bool mem_cgroup_disabled(void) |
| 816 | { |
| 817 | return true; |
| 818 | } |
| 819 | |
Johannes Weiner | e27be24 | 2018-04-10 16:29:45 -0700 | [diff] [blame] | 820 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
| 821 | enum memcg_memory_event event) |
Johannes Weiner | 241994ed | 2015-02-11 15:26:06 -0800 | [diff] [blame] | 822 | { |
| 823 | } |
| 824 | |
Roman Gushchin | fe6bdfc | 2018-06-14 15:28:05 -0700 | [diff] [blame] | 825 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
| 826 | enum memcg_memory_event event) |
| 827 | { |
| 828 | } |
| 829 | |
Roman Gushchin | bf8d5d5 | 2018-06-07 17:07:46 -0700 | [diff] [blame] | 830 | static inline enum mem_cgroup_protection mem_cgroup_protected( |
| 831 | struct mem_cgroup *root, struct mem_cgroup *memcg) |
Johannes Weiner | 241994ed | 2015-02-11 15:26:06 -0800 | [diff] [blame] | 832 | { |
Roman Gushchin | bf8d5d5 | 2018-06-07 17:07:46 -0700 | [diff] [blame] | 833 | return MEMCG_PROT_NONE; |
Johannes Weiner | 241994ed | 2015-02-11 15:26:06 -0800 | [diff] [blame] | 834 | } |
| 835 | |
Johannes Weiner | 00501b5 | 2014-08-08 14:19:20 -0700 | [diff] [blame] | 836 | static inline int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, |
| 837 | gfp_t gfp_mask, |
Kirill A. Shutemov | f627c2f | 2016-01-15 16:52:20 -0800 | [diff] [blame] | 838 | struct mem_cgroup **memcgp, |
| 839 | bool compound) |
Balbir Singh | 8a9f3cc | 2008-02-07 00:13:53 -0800 | [diff] [blame] | 840 | { |
Johannes Weiner | 00501b5 | 2014-08-08 14:19:20 -0700 | [diff] [blame] | 841 | *memcgp = NULL; |
Balbir Singh | 8a9f3cc | 2008-02-07 00:13:53 -0800 | [diff] [blame] | 842 | return 0; |
| 843 | } |
| 844 | |
Tejun Heo | 2cf8558 | 2018-07-03 11:14:56 -0400 | [diff] [blame] | 845 | static inline int mem_cgroup_try_charge_delay(struct page *page, |
| 846 | struct mm_struct *mm, |
| 847 | gfp_t gfp_mask, |
| 848 | struct mem_cgroup **memcgp, |
| 849 | bool compound) |
| 850 | { |
| 851 | *memcgp = NULL; |
| 852 | return 0; |
| 853 | } |
| 854 | |
Johannes Weiner | 00501b5 | 2014-08-08 14:19:20 -0700 | [diff] [blame] | 855 | static inline void mem_cgroup_commit_charge(struct page *page, |
| 856 | struct mem_cgroup *memcg, |
Kirill A. Shutemov | f627c2f | 2016-01-15 16:52:20 -0800 | [diff] [blame] | 857 | bool lrucare, bool compound) |
KAMEZAWA Hiroyuki | 7a81b88 | 2009-01-07 18:07:48 -0800 | [diff] [blame] | 858 | { |
| 859 | } |
| 860 | |
Johannes Weiner | 00501b5 | 2014-08-08 14:19:20 -0700 | [diff] [blame] | 861 | static inline void mem_cgroup_cancel_charge(struct page *page, |
Kirill A. Shutemov | f627c2f | 2016-01-15 16:52:20 -0800 | [diff] [blame] | 862 | struct mem_cgroup *memcg, |
| 863 | bool compound) |
KAMEZAWA Hiroyuki | 7a81b88 | 2009-01-07 18:07:48 -0800 | [diff] [blame] | 864 | { |
| 865 | } |
| 866 | |
Johannes Weiner | 0a31bc9 | 2014-08-08 14:19:22 -0700 | [diff] [blame] | 867 | static inline void mem_cgroup_uncharge(struct page *page) |
| 868 | { |
| 869 | } |
| 870 | |
Johannes Weiner | 747db95 | 2014-08-08 14:19:24 -0700 | [diff] [blame] | 871 | static inline void mem_cgroup_uncharge_list(struct list_head *page_list) |
KAMEZAWA Hiroyuki | 569b846 | 2009-12-15 16:47:03 -0800 | [diff] [blame] | 872 | { |
| 873 | } |
| 874 | |
Johannes Weiner | 6a93ca8 | 2016-03-15 14:57:19 -0700 | [diff] [blame] | 875 | static inline void mem_cgroup_migrate(struct page *old, struct page *new) |
KAMEZAWA Hiroyuki | 69029cd | 2008-07-25 01:47:14 -0700 | [diff] [blame] | 876 | { |
| 877 | } |
| 878 | |
Mel Gorman | a9dd0a8 | 2016-07-28 15:46:02 -0700 | [diff] [blame] | 879 | static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 880 | struct mem_cgroup *memcg) |
Johannes Weiner | 925b767 | 2012-01-12 17:18:15 -0800 | [diff] [blame] | 881 | { |
Mel Gorman | a9dd0a8 | 2016-07-28 15:46:02 -0700 | [diff] [blame] | 882 | return node_lruvec(pgdat); |
Johannes Weiner | 925b767 | 2012-01-12 17:18:15 -0800 | [diff] [blame] | 883 | } |
| 884 | |
Hugh Dickins | fa9add6 | 2012-05-29 15:07:09 -0700 | [diff] [blame] | 885 | static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page, |
Mel Gorman | 599d0c9 | 2016-07-28 15:45:31 -0700 | [diff] [blame] | 886 | struct pglist_data *pgdat) |
Minchan Kim | 3f58a82 | 2011-03-22 16:32:53 -0700 | [diff] [blame] | 887 | { |
Mel Gorman | 599d0c9 | 2016-07-28 15:45:31 -0700 | [diff] [blame] | 888 | return &pgdat->lruvec; |
Balbir Singh | 66e1707 | 2008-02-07 00:13:56 -0800 | [diff] [blame] | 889 | } |
| 890 | |
Johannes Weiner | 587af30 | 2012-10-08 16:34:12 -0700 | [diff] [blame] | 891 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
Raghavendra K T | c0ff4b8 | 2011-11-02 13:38:15 -0700 | [diff] [blame] | 892 | struct mem_cgroup *memcg) |
Balbir Singh | bed7161 | 2008-02-07 00:14:01 -0800 | [diff] [blame] | 893 | { |
Johannes Weiner | 587af30 | 2012-10-08 16:34:12 -0700 | [diff] [blame] | 894 | return true; |
Balbir Singh | bed7161 | 2008-02-07 00:14:01 -0800 | [diff] [blame] | 895 | } |
| 896 | |
David Rientjes | ffbdccf | 2013-07-03 15:01:23 -0700 | [diff] [blame] | 897 | static inline bool task_in_mem_cgroup(struct task_struct *task, |
| 898 | const struct mem_cgroup *memcg) |
David Rientjes | 4c4a221 | 2008-02-07 00:14:06 -0800 | [diff] [blame] | 899 | { |
David Rientjes | ffbdccf | 2013-07-03 15:01:23 -0700 | [diff] [blame] | 900 | return true; |
David Rientjes | 4c4a221 | 2008-02-07 00:14:06 -0800 | [diff] [blame] | 901 | } |
| 902 | |
Shakeel Butt | d46eb14b | 2018-08-17 15:46:39 -0700 | [diff] [blame] | 903 | static inline struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm) |
| 904 | { |
| 905 | return NULL; |
| 906 | } |
| 907 | |
Shakeel Butt | f745c6f | 2018-08-17 15:46:44 -0700 | [diff] [blame] | 908 | static inline struct mem_cgroup *get_mem_cgroup_from_page(struct page *page) |
| 909 | { |
| 910 | return NULL; |
| 911 | } |
| 912 | |
Roman Gushchin | dc0b586 | 2018-08-17 15:46:36 -0700 | [diff] [blame] | 913 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
| 914 | { |
| 915 | } |
| 916 | |
Johannes Weiner | 5660048 | 2012-01-12 17:17:59 -0800 | [diff] [blame] | 917 | static inline struct mem_cgroup * |
| 918 | mem_cgroup_iter(struct mem_cgroup *root, |
| 919 | struct mem_cgroup *prev, |
| 920 | struct mem_cgroup_reclaim_cookie *reclaim) |
| 921 | { |
| 922 | return NULL; |
| 923 | } |
| 924 | |
| 925 | static inline void mem_cgroup_iter_break(struct mem_cgroup *root, |
| 926 | struct mem_cgroup *prev) |
| 927 | { |
| 928 | } |
| 929 | |
Vladimir Davydov | 7c5f64f | 2016-10-07 16:57:23 -0700 | [diff] [blame] | 930 | static inline int mem_cgroup_scan_tasks(struct mem_cgroup *memcg, |
| 931 | int (*fn)(struct task_struct *, void *), void *arg) |
| 932 | { |
| 933 | return 0; |
| 934 | } |
| 935 | |
Johannes Weiner | 23047a9 | 2016-03-15 14:57:16 -0700 | [diff] [blame] | 936 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
Hirokazu Takahashi | f8d66542 | 2009-01-07 18:08:02 -0800 | [diff] [blame] | 937 | { |
Johannes Weiner | 23047a9 | 2016-03-15 14:57:16 -0700 | [diff] [blame] | 938 | return 0; |
| 939 | } |
| 940 | |
| 941 | static inline struct mem_cgroup *mem_cgroup_from_id(unsigned short id) |
| 942 | { |
| 943 | WARN_ON_ONCE(id); |
| 944 | /* XXX: This should always return root_mem_cgroup */ |
| 945 | return NULL; |
Hirokazu Takahashi | f8d66542 | 2009-01-07 18:08:02 -0800 | [diff] [blame] | 946 | } |
KAMEZAWA Hiroyuki | a636b32 | 2009-01-07 18:08:08 -0800 | [diff] [blame] | 947 | |
Chris Down | aa9694b | 2019-03-05 15:45:52 -0800 | [diff] [blame] | 948 | static inline struct mem_cgroup *mem_cgroup_from_seq(struct seq_file *m) |
| 949 | { |
| 950 | return NULL; |
| 951 | } |
| 952 | |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 953 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
| 954 | { |
| 955 | return NULL; |
| 956 | } |
| 957 | |
Vladimir Davydov | eb01aaa | 2016-01-20 15:03:02 -0800 | [diff] [blame] | 958 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
KOSAKI Motohiro | 14797e2 | 2009-01-07 18:08:18 -0800 | [diff] [blame] | 959 | { |
Yaowei Bai | 13308ca | 2015-11-05 18:47:40 -0800 | [diff] [blame] | 960 | return true; |
KOSAKI Motohiro | 14797e2 | 2009-01-07 18:08:18 -0800 | [diff] [blame] | 961 | } |
| 962 | |
KOSAKI Motohiro | a3d8e05 | 2009-01-07 18:08:19 -0800 | [diff] [blame] | 963 | static inline unsigned long |
Hugh Dickins | 4d7dcca | 2012-05-29 15:07:08 -0700 | [diff] [blame] | 964 | mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) |
KOSAKI Motohiro | a3d8e05 | 2009-01-07 18:08:19 -0800 | [diff] [blame] | 965 | { |
| 966 | return 0; |
| 967 | } |
Michal Hocko | b4536f0c8 | 2017-01-10 16:58:04 -0800 | [diff] [blame] | 968 | static inline |
| 969 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, |
| 970 | enum lru_list lru, int zone_idx) |
| 971 | { |
| 972 | return 0; |
| 973 | } |
KOSAKI Motohiro | a3d8e05 | 2009-01-07 18:08:19 -0800 | [diff] [blame] | 974 | |
Vladimir Davydov | 0a6b76d | 2016-03-17 14:18:42 -0700 | [diff] [blame] | 975 | static inline unsigned long |
| 976 | mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, |
| 977 | int nid, unsigned int lru_mask) |
| 978 | { |
| 979 | return 0; |
| 980 | } |
| 981 | |
Roman Gushchin | bbec2e1 | 2018-06-07 17:06:18 -0700 | [diff] [blame] | 982 | static inline unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg) |
Vladimir Davydov | 7c5f64f | 2016-10-07 16:57:23 -0700 | [diff] [blame] | 983 | { |
| 984 | return 0; |
| 985 | } |
| 986 | |
Balbir Singh | e222432 | 2009-04-02 16:57:39 -0700 | [diff] [blame] | 987 | static inline void |
yuzhoujian | f0c867d | 2018-12-28 00:36:10 -0800 | [diff] [blame] | 988 | mem_cgroup_print_oom_context(struct mem_cgroup *memcg, struct task_struct *p) |
| 989 | { |
| 990 | } |
| 991 | |
| 992 | static inline void |
| 993 | mem_cgroup_print_oom_meminfo(struct mem_cgroup *memcg) |
Balbir Singh | e222432 | 2009-04-02 16:57:39 -0700 | [diff] [blame] | 994 | { |
| 995 | } |
| 996 | |
Johannes Weiner | 739f79f | 2017-08-18 15:15:48 -0700 | [diff] [blame] | 997 | static inline struct mem_cgroup *lock_page_memcg(struct page *page) |
| 998 | { |
| 999 | return NULL; |
| 1000 | } |
| 1001 | |
| 1002 | static inline void __unlock_page_memcg(struct mem_cgroup *memcg) |
KAMEZAWA Hiroyuki | 89c06bd | 2012-03-21 16:34:25 -0700 | [diff] [blame] | 1003 | { |
| 1004 | } |
| 1005 | |
Johannes Weiner | 62cccb8 | 2016-03-15 14:57:22 -0700 | [diff] [blame] | 1006 | static inline void unlock_page_memcg(struct page *page) |
KAMEZAWA Hiroyuki | 89c06bd | 2012-03-21 16:34:25 -0700 | [diff] [blame] | 1007 | { |
| 1008 | } |
| 1009 | |
Tejun Heo | b23afb9 | 2015-11-05 18:46:11 -0800 | [diff] [blame] | 1010 | static inline void mem_cgroup_handle_over_high(void) |
| 1011 | { |
| 1012 | } |
| 1013 | |
Michal Hocko | 29ef680 | 2018-08-17 15:47:11 -0700 | [diff] [blame] | 1014 | static inline void mem_cgroup_enter_user_fault(void) |
Johannes Weiner | 519e524 | 2013-09-12 15:13:42 -0700 | [diff] [blame] | 1015 | { |
| 1016 | } |
| 1017 | |
Michal Hocko | 29ef680 | 2018-08-17 15:47:11 -0700 | [diff] [blame] | 1018 | static inline void mem_cgroup_exit_user_fault(void) |
Johannes Weiner | 519e524 | 2013-09-12 15:13:42 -0700 | [diff] [blame] | 1019 | { |
| 1020 | } |
| 1021 | |
Johannes Weiner | 3812c8c | 2013-09-12 15:13:44 -0700 | [diff] [blame] | 1022 | static inline bool task_in_memcg_oom(struct task_struct *p) |
| 1023 | { |
| 1024 | return false; |
| 1025 | } |
| 1026 | |
Johannes Weiner | 4942642 | 2013-10-16 13:46:59 -0700 | [diff] [blame] | 1027 | static inline bool mem_cgroup_oom_synchronize(bool wait) |
Johannes Weiner | 3812c8c | 2013-09-12 15:13:44 -0700 | [diff] [blame] | 1028 | { |
| 1029 | return false; |
| 1030 | } |
| 1031 | |
Roman Gushchin | 3d8b38e | 2018-08-21 21:53:54 -0700 | [diff] [blame] | 1032 | static inline struct mem_cgroup *mem_cgroup_get_oom_group( |
| 1033 | struct task_struct *victim, struct mem_cgroup *oom_domain) |
| 1034 | { |
| 1035 | return NULL; |
| 1036 | } |
| 1037 | |
| 1038 | static inline void mem_cgroup_print_oom_group(struct mem_cgroup *memcg) |
| 1039 | { |
| 1040 | } |
| 1041 | |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 1042 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1043 | int idx) |
Johannes Weiner | 2a2e488 | 2017-05-03 14:55:03 -0700 | [diff] [blame] | 1044 | { |
| 1045 | return 0; |
| 1046 | } |
| 1047 | |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1048 | static inline void __mod_memcg_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1049 | int idx, |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1050 | int nr) |
| 1051 | { |
| 1052 | } |
| 1053 | |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 1054 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1055 | int idx, |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 1056 | int nr) |
Johannes Weiner | 2a2e488 | 2017-05-03 14:55:03 -0700 | [diff] [blame] | 1057 | { |
| 1058 | } |
| 1059 | |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1060 | static inline void __mod_memcg_page_state(struct page *page, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1061 | int idx, |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1062 | int nr) |
Johannes Weiner | 2a2e488 | 2017-05-03 14:55:03 -0700 | [diff] [blame] | 1063 | { |
| 1064 | } |
| 1065 | |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 1066 | static inline void mod_memcg_page_state(struct page *page, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1067 | int idx, |
Johannes Weiner | ccda7f4 | 2017-05-03 14:55:16 -0700 | [diff] [blame] | 1068 | int nr) |
Johannes Weiner | 553af43 | 2017-03-31 15:11:50 -0700 | [diff] [blame] | 1069 | { |
| 1070 | } |
| 1071 | |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1072 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
| 1073 | enum node_stat_item idx) |
Greg Thelen | 2a7106f | 2011-01-13 15:47:37 -0800 | [diff] [blame] | 1074 | { |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1075 | return node_page_state(lruvec_pgdat(lruvec), idx); |
Greg Thelen | 2a7106f | 2011-01-13 15:47:37 -0800 | [diff] [blame] | 1076 | } |
| 1077 | |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1078 | static inline void __mod_lruvec_state(struct lruvec *lruvec, |
| 1079 | enum node_stat_item idx, int val) |
Balbir Singh | d69b042 | 2009-06-17 16:26:34 -0700 | [diff] [blame] | 1080 | { |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1081 | __mod_node_page_state(lruvec_pgdat(lruvec), idx, val); |
| 1082 | } |
| 1083 | |
| 1084 | static inline void mod_lruvec_state(struct lruvec *lruvec, |
| 1085 | enum node_stat_item idx, int val) |
| 1086 | { |
| 1087 | mod_node_page_state(lruvec_pgdat(lruvec), idx, val); |
| 1088 | } |
| 1089 | |
| 1090 | static inline void __mod_lruvec_page_state(struct page *page, |
| 1091 | enum node_stat_item idx, int val) |
| 1092 | { |
| 1093 | __mod_node_page_state(page_pgdat(page), idx, val); |
| 1094 | } |
| 1095 | |
| 1096 | static inline void mod_lruvec_page_state(struct page *page, |
| 1097 | enum node_stat_item idx, int val) |
| 1098 | { |
| 1099 | mod_node_page_state(page_pgdat(page), idx, val); |
Balbir Singh | d69b042 | 2009-06-17 16:26:34 -0700 | [diff] [blame] | 1100 | } |
| 1101 | |
Balbir Singh | 4e41695 | 2009-09-23 15:56:39 -0700 | [diff] [blame] | 1102 | static inline |
Mel Gorman | ef8f232 | 2016-07-28 15:46:05 -0700 | [diff] [blame] | 1103 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
Andrew Morton | 0608f43 | 2013-09-24 15:27:41 -0700 | [diff] [blame] | 1104 | gfp_t gfp_mask, |
| 1105 | unsigned long *total_scanned) |
Balbir Singh | 4e41695 | 2009-09-23 15:56:39 -0700 | [diff] [blame] | 1106 | { |
Andrew Morton | 0608f43 | 2013-09-24 15:27:41 -0700 | [diff] [blame] | 1107 | return 0; |
Balbir Singh | 4e41695 | 2009-09-23 15:56:39 -0700 | [diff] [blame] | 1108 | } |
| 1109 | |
KAMEZAWA Hiroyuki | e94c8a9 | 2012-01-12 17:18:20 -0800 | [diff] [blame] | 1110 | static inline void mem_cgroup_split_huge_fixup(struct page *head) |
KAMEZAWA Hiroyuki | ca3e021 | 2011-01-20 14:44:24 -0800 | [diff] [blame] | 1111 | { |
| 1112 | } |
| 1113 | |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 1114 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
| 1115 | enum vm_event_item idx, |
| 1116 | unsigned long count) |
| 1117 | { |
| 1118 | } |
| 1119 | |
Kirill Tkhai | 9851ac1 | 2019-05-13 17:16:54 -0700 | [diff] [blame^] | 1120 | static inline void __count_memcg_events(struct mem_cgroup *memcg, |
| 1121 | enum vm_event_item idx, |
| 1122 | unsigned long count) |
| 1123 | { |
| 1124 | } |
| 1125 | |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 1126 | static inline void count_memcg_page_event(struct page *page, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1127 | int idx) |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 1128 | { |
| 1129 | } |
| 1130 | |
Ying Han | 456f998 | 2011-05-26 16:25:38 -0700 | [diff] [blame] | 1131 | static inline |
Roman Gushchin | 2262185 | 2017-07-06 15:40:25 -0700 | [diff] [blame] | 1132 | void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx) |
Ying Han | 456f998 | 2011-05-26 16:25:38 -0700 | [diff] [blame] | 1133 | { |
| 1134 | } |
Andrew Morton | c255a45 | 2012-07-31 16:43:02 -0700 | [diff] [blame] | 1135 | #endif /* CONFIG_MEMCG */ |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 1136 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1137 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1138 | static inline void __inc_memcg_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1139 | int idx) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1140 | { |
| 1141 | __mod_memcg_state(memcg, idx, 1); |
| 1142 | } |
| 1143 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1144 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1145 | static inline void __dec_memcg_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1146 | int idx) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1147 | { |
| 1148 | __mod_memcg_state(memcg, idx, -1); |
| 1149 | } |
| 1150 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1151 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1152 | static inline void __inc_memcg_page_state(struct page *page, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1153 | int idx) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1154 | { |
| 1155 | __mod_memcg_page_state(page, idx, 1); |
| 1156 | } |
| 1157 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1158 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1159 | static inline void __dec_memcg_page_state(struct page *page, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1160 | int idx) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1161 | { |
| 1162 | __mod_memcg_page_state(page, idx, -1); |
| 1163 | } |
| 1164 | |
| 1165 | static inline void __inc_lruvec_state(struct lruvec *lruvec, |
| 1166 | enum node_stat_item idx) |
| 1167 | { |
| 1168 | __mod_lruvec_state(lruvec, idx, 1); |
| 1169 | } |
| 1170 | |
| 1171 | static inline void __dec_lruvec_state(struct lruvec *lruvec, |
| 1172 | enum node_stat_item idx) |
| 1173 | { |
| 1174 | __mod_lruvec_state(lruvec, idx, -1); |
| 1175 | } |
| 1176 | |
| 1177 | static inline void __inc_lruvec_page_state(struct page *page, |
| 1178 | enum node_stat_item idx) |
| 1179 | { |
| 1180 | __mod_lruvec_page_state(page, idx, 1); |
| 1181 | } |
| 1182 | |
| 1183 | static inline void __dec_lruvec_page_state(struct page *page, |
| 1184 | enum node_stat_item idx) |
| 1185 | { |
| 1186 | __mod_lruvec_page_state(page, idx, -1); |
| 1187 | } |
| 1188 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1189 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1190 | static inline void inc_memcg_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1191 | int idx) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1192 | { |
| 1193 | mod_memcg_state(memcg, idx, 1); |
| 1194 | } |
| 1195 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1196 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1197 | static inline void dec_memcg_state(struct mem_cgroup *memcg, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1198 | int idx) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1199 | { |
| 1200 | mod_memcg_state(memcg, idx, -1); |
| 1201 | } |
| 1202 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1203 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1204 | static inline void inc_memcg_page_state(struct page *page, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1205 | int idx) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1206 | { |
| 1207 | mod_memcg_page_state(page, idx, 1); |
| 1208 | } |
| 1209 | |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1210 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1211 | static inline void dec_memcg_page_state(struct page *page, |
Matthias Kaehlcke | 04fecbf | 2017-09-06 16:22:09 -0700 | [diff] [blame] | 1212 | int idx) |
Johannes Weiner | 00f3ca2 | 2017-07-06 15:40:52 -0700 | [diff] [blame] | 1213 | { |
| 1214 | mod_memcg_page_state(page, idx, -1); |
| 1215 | } |
| 1216 | |
| 1217 | static inline void inc_lruvec_state(struct lruvec *lruvec, |
| 1218 | enum node_stat_item idx) |
| 1219 | { |
| 1220 | mod_lruvec_state(lruvec, idx, 1); |
| 1221 | } |
| 1222 | |
| 1223 | static inline void dec_lruvec_state(struct lruvec *lruvec, |
| 1224 | enum node_stat_item idx) |
| 1225 | { |
| 1226 | mod_lruvec_state(lruvec, idx, -1); |
| 1227 | } |
| 1228 | |
| 1229 | static inline void inc_lruvec_page_state(struct page *page, |
| 1230 | enum node_stat_item idx) |
| 1231 | { |
| 1232 | mod_lruvec_page_state(page, idx, 1); |
| 1233 | } |
| 1234 | |
| 1235 | static inline void dec_lruvec_page_state(struct page *page, |
| 1236 | enum node_stat_item idx) |
| 1237 | { |
| 1238 | mod_lruvec_page_state(page, idx, -1); |
| 1239 | } |
| 1240 | |
Tejun Heo | 52ebea7 | 2015-05-22 17:13:37 -0400 | [diff] [blame] | 1241 | #ifdef CONFIG_CGROUP_WRITEBACK |
Tejun Heo | 841710a | 2015-05-22 18:23:33 -0400 | [diff] [blame] | 1242 | |
Tejun Heo | 841710a | 2015-05-22 18:23:33 -0400 | [diff] [blame] | 1243 | struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb); |
Tejun Heo | c5edf9c | 2015-09-29 13:04:26 -0400 | [diff] [blame] | 1244 | void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages, |
| 1245 | unsigned long *pheadroom, unsigned long *pdirty, |
| 1246 | unsigned long *pwriteback); |
Tejun Heo | 841710a | 2015-05-22 18:23:33 -0400 | [diff] [blame] | 1247 | |
| 1248 | #else /* CONFIG_CGROUP_WRITEBACK */ |
| 1249 | |
| 1250 | static inline struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb) |
| 1251 | { |
| 1252 | return NULL; |
| 1253 | } |
| 1254 | |
Tejun Heo | c2aa723 | 2015-05-22 18:23:35 -0400 | [diff] [blame] | 1255 | static inline void mem_cgroup_wb_stats(struct bdi_writeback *wb, |
Tejun Heo | c5edf9c | 2015-09-29 13:04:26 -0400 | [diff] [blame] | 1256 | unsigned long *pfilepages, |
| 1257 | unsigned long *pheadroom, |
Tejun Heo | c2aa723 | 2015-05-22 18:23:35 -0400 | [diff] [blame] | 1258 | unsigned long *pdirty, |
| 1259 | unsigned long *pwriteback) |
| 1260 | { |
| 1261 | } |
| 1262 | |
Tejun Heo | 841710a | 2015-05-22 18:23:33 -0400 | [diff] [blame] | 1263 | #endif /* CONFIG_CGROUP_WRITEBACK */ |
Tejun Heo | 52ebea7 | 2015-05-22 17:13:37 -0400 | [diff] [blame] | 1264 | |
Glauber Costa | e1aab16 | 2011-12-11 21:47:03 +0000 | [diff] [blame] | 1265 | struct sock; |
Johannes Weiner | baac50b | 2016-01-14 15:21:17 -0800 | [diff] [blame] | 1266 | bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); |
| 1267 | void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); |
Johannes Weiner | d886f4e | 2016-01-20 15:02:47 -0800 | [diff] [blame] | 1268 | #ifdef CONFIG_MEMCG |
Johannes Weiner | ef12947 | 2016-01-14 15:21:34 -0800 | [diff] [blame] | 1269 | extern struct static_key_false memcg_sockets_enabled_key; |
| 1270 | #define mem_cgroup_sockets_enabled static_branch_unlikely(&memcg_sockets_enabled_key) |
Johannes Weiner | 2d75807 | 2016-10-07 17:00:58 -0700 | [diff] [blame] | 1271 | void mem_cgroup_sk_alloc(struct sock *sk); |
| 1272 | void mem_cgroup_sk_free(struct sock *sk); |
Johannes Weiner | baac50b | 2016-01-14 15:21:17 -0800 | [diff] [blame] | 1273 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
Johannes Weiner | e805605 | 2016-01-14 15:21:14 -0800 | [diff] [blame] | 1274 | { |
Johannes Weiner | 0db1529 | 2016-01-20 15:02:50 -0800 | [diff] [blame] | 1275 | if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && memcg->tcpmem_pressure) |
Johannes Weiner | 8e8ae64 | 2016-01-14 15:21:32 -0800 | [diff] [blame] | 1276 | return true; |
Johannes Weiner | 8e8ae64 | 2016-01-14 15:21:32 -0800 | [diff] [blame] | 1277 | do { |
| 1278 | if (time_before(jiffies, memcg->socket_pressure)) |
| 1279 | return true; |
| 1280 | } while ((memcg = parent_mem_cgroup(memcg))); |
| 1281 | return false; |
Johannes Weiner | e805605 | 2016-01-14 15:21:14 -0800 | [diff] [blame] | 1282 | } |
| 1283 | #else |
Johannes Weiner | 80e95fe | 2016-01-14 15:21:20 -0800 | [diff] [blame] | 1284 | #define mem_cgroup_sockets_enabled 0 |
Johannes Weiner | 2d75807 | 2016-10-07 17:00:58 -0700 | [diff] [blame] | 1285 | static inline void mem_cgroup_sk_alloc(struct sock *sk) { }; |
| 1286 | static inline void mem_cgroup_sk_free(struct sock *sk) { }; |
Johannes Weiner | baac50b | 2016-01-14 15:21:17 -0800 | [diff] [blame] | 1287 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
Johannes Weiner | e805605 | 2016-01-14 15:21:14 -0800 | [diff] [blame] | 1288 | { |
| 1289 | return false; |
| 1290 | } |
| 1291 | #endif |
Glauber Costa | 7ae1e1d | 2012-12-18 14:21:56 -0800 | [diff] [blame] | 1292 | |
Vladimir Davydov | 4526477 | 2016-07-26 15:24:21 -0700 | [diff] [blame] | 1293 | struct kmem_cache *memcg_kmem_get_cache(struct kmem_cache *cachep); |
| 1294 | void memcg_kmem_put_cache(struct kmem_cache *cachep); |
Roman Gushchin | 9b6f7e1 | 2018-10-26 15:03:19 -0700 | [diff] [blame] | 1295 | |
| 1296 | #ifdef CONFIG_MEMCG_KMEM |
Shakeel Butt | 60cd4bc | 2019-03-05 15:43:13 -0800 | [diff] [blame] | 1297 | int __memcg_kmem_charge(struct page *page, gfp_t gfp, int order); |
| 1298 | void __memcg_kmem_uncharge(struct page *page, int order); |
| 1299 | int __memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order, |
| 1300 | struct mem_cgroup *memcg); |
Vladimir Davydov | 4526477 | 2016-07-26 15:24:21 -0700 | [diff] [blame] | 1301 | |
Johannes Weiner | ef12947 | 2016-01-14 15:21:34 -0800 | [diff] [blame] | 1302 | extern struct static_key_false memcg_kmem_enabled_key; |
Tejun Heo | 17cc4df | 2017-02-22 15:41:36 -0800 | [diff] [blame] | 1303 | extern struct workqueue_struct *memcg_kmem_cache_wq; |
Glauber Costa | 749c541 | 2012-12-18 14:23:01 -0800 | [diff] [blame] | 1304 | |
Vladimir Davydov | dbcf73e | 2015-02-12 14:58:57 -0800 | [diff] [blame] | 1305 | extern int memcg_nr_cache_ids; |
Michal Hocko | 6421999 | 2015-09-08 15:01:07 -0700 | [diff] [blame] | 1306 | void memcg_get_cache_ids(void); |
| 1307 | void memcg_put_cache_ids(void); |
Glauber Costa | ebe945c | 2012-12-18 14:23:10 -0800 | [diff] [blame] | 1308 | |
| 1309 | /* |
| 1310 | * Helper macro to loop through all memcg-specific caches. Callers must still |
| 1311 | * check if the cache is valid (it is either valid or NULL). |
| 1312 | * the slab_mutex must be held when looping through those caches |
| 1313 | */ |
Glauber Costa | 749c541 | 2012-12-18 14:23:01 -0800 | [diff] [blame] | 1314 | #define for_each_memcg_cache_index(_idx) \ |
Vladimir Davydov | dbcf73e | 2015-02-12 14:58:57 -0800 | [diff] [blame] | 1315 | for ((_idx) = 0; (_idx) < memcg_nr_cache_ids; (_idx)++) |
Glauber Costa | 749c541 | 2012-12-18 14:23:01 -0800 | [diff] [blame] | 1316 | |
Glauber Costa | 7ae1e1d | 2012-12-18 14:21:56 -0800 | [diff] [blame] | 1317 | static inline bool memcg_kmem_enabled(void) |
| 1318 | { |
Johannes Weiner | ef12947 | 2016-01-14 15:21:34 -0800 | [diff] [blame] | 1319 | return static_branch_unlikely(&memcg_kmem_enabled_key); |
Glauber Costa | 7ae1e1d | 2012-12-18 14:21:56 -0800 | [diff] [blame] | 1320 | } |
| 1321 | |
Shakeel Butt | 60cd4bc | 2019-03-05 15:43:13 -0800 | [diff] [blame] | 1322 | static inline int memcg_kmem_charge(struct page *page, gfp_t gfp, int order) |
| 1323 | { |
| 1324 | if (memcg_kmem_enabled()) |
| 1325 | return __memcg_kmem_charge(page, gfp, order); |
| 1326 | return 0; |
| 1327 | } |
| 1328 | |
| 1329 | static inline void memcg_kmem_uncharge(struct page *page, int order) |
| 1330 | { |
| 1331 | if (memcg_kmem_enabled()) |
| 1332 | __memcg_kmem_uncharge(page, order); |
| 1333 | } |
| 1334 | |
| 1335 | static inline int memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, |
| 1336 | int order, struct mem_cgroup *memcg) |
| 1337 | { |
| 1338 | if (memcg_kmem_enabled()) |
| 1339 | return __memcg_kmem_charge_memcg(page, gfp, order, memcg); |
| 1340 | return 0; |
| 1341 | } |
Glauber Costa | 7ae1e1d | 2012-12-18 14:21:56 -0800 | [diff] [blame] | 1342 | /* |
Jesper Dangaard Brouer | 9f706d6 | 2016-03-15 14:54:03 -0700 | [diff] [blame] | 1343 | * helper for accessing a memcg's index. It will be used as an index in the |
Michal Hocko | 33398cf | 2015-09-08 15:01:02 -0700 | [diff] [blame] | 1344 | * child cache array in kmem_cache, and also to derive its name. This function |
| 1345 | * will return -1 when this is not a kmem-limited memcg. |
| 1346 | */ |
| 1347 | static inline int memcg_cache_id(struct mem_cgroup *memcg) |
| 1348 | { |
| 1349 | return memcg ? memcg->kmemcg_id : -1; |
| 1350 | } |
Vladimir Davydov | 5722d09 | 2014-04-07 15:39:24 -0700 | [diff] [blame] | 1351 | |
Kirill Tkhai | 0a4465d | 2018-08-17 15:47:37 -0700 | [diff] [blame] | 1352 | extern int memcg_expand_shrinker_maps(int new_id); |
| 1353 | |
Kirill Tkhai | fae91d6 | 2018-08-17 15:48:10 -0700 | [diff] [blame] | 1354 | extern void memcg_set_shrinker_bit(struct mem_cgroup *memcg, |
| 1355 | int nid, int shrinker_id); |
Glauber Costa | 7ae1e1d | 2012-12-18 14:21:56 -0800 | [diff] [blame] | 1356 | #else |
Roman Gushchin | 9b6f7e1 | 2018-10-26 15:03:19 -0700 | [diff] [blame] | 1357 | |
| 1358 | static inline int memcg_kmem_charge(struct page *page, gfp_t gfp, int order) |
| 1359 | { |
| 1360 | return 0; |
| 1361 | } |
| 1362 | |
| 1363 | static inline void memcg_kmem_uncharge(struct page *page, int order) |
| 1364 | { |
| 1365 | } |
| 1366 | |
Shakeel Butt | 60cd4bc | 2019-03-05 15:43:13 -0800 | [diff] [blame] | 1367 | static inline int __memcg_kmem_charge(struct page *page, gfp_t gfp, int order) |
| 1368 | { |
| 1369 | return 0; |
| 1370 | } |
| 1371 | |
| 1372 | static inline void __memcg_kmem_uncharge(struct page *page, int order) |
| 1373 | { |
| 1374 | } |
| 1375 | |
Glauber Costa | 749c541 | 2012-12-18 14:23:01 -0800 | [diff] [blame] | 1376 | #define for_each_memcg_cache_index(_idx) \ |
| 1377 | for (; NULL; ) |
| 1378 | |
Glauber Costa | b9ce5ef | 2012-12-18 14:22:46 -0800 | [diff] [blame] | 1379 | static inline bool memcg_kmem_enabled(void) |
| 1380 | { |
| 1381 | return false; |
| 1382 | } |
| 1383 | |
Glauber Costa | 2633d7a | 2012-12-18 14:22:34 -0800 | [diff] [blame] | 1384 | static inline int memcg_cache_id(struct mem_cgroup *memcg) |
| 1385 | { |
| 1386 | return -1; |
| 1387 | } |
| 1388 | |
Vladimir Davydov | 05257a1 | 2015-02-12 14:59:01 -0800 | [diff] [blame] | 1389 | static inline void memcg_get_cache_ids(void) |
| 1390 | { |
| 1391 | } |
| 1392 | |
| 1393 | static inline void memcg_put_cache_ids(void) |
| 1394 | { |
| 1395 | } |
| 1396 | |
Kirill Tkhai | fae91d6 | 2018-08-17 15:48:10 -0700 | [diff] [blame] | 1397 | static inline void memcg_set_shrinker_bit(struct mem_cgroup *memcg, |
| 1398 | int nid, int shrinker_id) { } |
Kirill Tkhai | 84c07d1 | 2018-08-17 15:47:25 -0700 | [diff] [blame] | 1399 | #endif /* CONFIG_MEMCG_KMEM */ |
Johannes Weiner | 127424c | 2016-01-20 15:02:32 -0800 | [diff] [blame] | 1400 | |
Balbir Singh | 8cdea7c | 2008-02-07 00:13:50 -0800 | [diff] [blame] | 1401 | #endif /* _LINUX_MEMCONTROL_H */ |